Beluga CBE with CNT Resonated Test Pipes

Dzel

That might be what I will have to do.

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Grindkiezer

Does it rattle?

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Z

Dzel

Yes I can see where it hits the cross member. It goes and comes but I would say it is way more than a rattle. I travel a total of 6 miles to and from work a day. After this Sunday the car will probably never see the light of day until it's time to install the turbos. So for right now I have an old micro fiber rag wedged in between to the exhaust pipe and the cross member until I can figure something out.

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roplusbee

Can you use a different hanger to bring the exhaust up to miss the x-member or am I thinking the wrong way? We are talking about up front near the O2 sensors right?

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2007 350Z NISMO #0618: Zerolift | UPREV | F.I. | Greddy | Competition Clutch | Injector Dynamics | Aeromotive | Pioneer | JL

roplusbee

Everyone that has anything other than stock components before the mid-pipe/y-pipe has the hiss. I think Motordyne found a way to mitigate it, but it is still there. I feel your pain though. I searched for exhaust leaks for weeks, lol.

Just for reference, I have the Greddy 20G TT kit. The downpipes (2.5" ish) connect straight to the F.I. TT-TDX (3"). My theory is that the difference in piping size contributes to the hiss as well as any places where the pipes split (in my case).

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2007 350Z NISMO #0618: Zerolift | UPREV | F.I. | Greddy | Competition Clutch | Injector Dynamics | Aeromotive | Pioneer | JL

Dzel

No its the one right in the middle of the car the mid pipe is right over it.

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Dzel

The exhaust is also 2.75"i forgot to tell you guys this.

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stevent85

You have to loosen the mid pipe a little from both ends and push it up and tighten them back up....will require 2 people unless you have something you can shove vertically to hold it up while you tighten. Also a lift would help tremendously. I had the same problem with my greddy exhaust.

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Takeda stage 2 CAI, Z1 HFC, GREDDY Turbo TI-C

Dzel

Yeah I did that with the factory Jack

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stevent85

Hmmm....it worked for me.

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Jordo!

A Y pipe with a wider diameter than stock will cause hiss.

I believe the same is true when going to a H or X pipe (other than, I should expect, the OEM Nismo H).

Unresonated test pipes will hiss and then rasp on coast down.

The only way I know of to avoid it is to keep the Y pipe close to OEM diameter and to have resonated TP's.

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Shadezz

Sounds like I'll be sticking with my factory TP then...I like how she sounds just with the Y-pipe and exhaust.

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2012 370Z BLACK EDITION/ FLT BLK Rays / 5% 3M Tint / DW's / Z1 SS & 2 Piece Rotors
Nismo S-Tune OEM / Beluga CBE & Y-PIPE / DDX370 / GTR Start .4 Fluid / NST Blue Kit

Jordo!

Do you mean the cats?

You can pick up a set of used resonated TP's from someone, and that should eliminate the rasp and 95% of the hiss on coast down anyway.

The Y pipe will probably hiss no matter what you do... I went from a wider one back to S-tune (ever so slightly wider than OEM) because I couldn't stand the hiss.

Good luck... hopefully you will either get used to it, or find a combo that works.

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Shadezz

Yeah I guess I mean the factory cats....I'll be sticking with these as I'm very happy with the sound of the Beluga Racing CBE + YPIPE!!

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2012 370Z BLACK EDITION/ FLT BLK Rays / 5% 3M Tint / DW's / Z1 SS & 2 Piece Rotors
Nismo S-Tune OEM / Beluga CBE & Y-PIPE / DDX370 / GTR Start .4 Fluid / NST Blue Kit

Coon-azz

So I watched your video and loved the sound. Wanted to ask a few questions.
1) Do you have to buy the Y pipe with this setup for the Beluga CBE?
2) If you don't go with the Y pipe will it change the tone or is the Y pipe more for HP gains?
3) Do you have any fitment issues. I'm about to pull the trigger on this...

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